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How to work around the lack of transactions in MongoDB?
I know there are similar questions here but they are either telling me to switch back to regular RDBMS systems if I need transactions or use atomic operations or two-phase commit . The second solution seems the best choice. The third I don't wish to follow because it seems that many things coul...
What platforms have something other than 8-bit char?
Every now and then, someone on SO points out that char (aka 'byte') isn't necessarily 8 bits .
12 Answers
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No resource found - Theme.AppCompat.Light.DarkActionBar
I used ActionBar Style Generator, and now trying to use into my app, but getting :
17 Answers
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How can I brew link a specific version?
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Unfortunately, brew tap homebrew/versions now gives me an error Error: homebrew/versions was deprecated. This tap is now empty as all its formulae were migrated `
– Juraj Martinka
Jun 14 '19 at 11:57
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Visual Studio, Find and replace, regex
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It is now different in Visual Studio 2012. $1 should be used instead of \1. () now replaces {}. More consistant with everyone else now. msdn.microsoft.com/en-us/library/2k3te2cs(v=vs.110).aspx
– oillio
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Adding dictionaries together, Python [duplicate]
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@dimo414 Yes, my bad. I can't change it now however. I use ChainMap from collections to achieve this functionality now via dict(ChainMap(dic1, dic0)). However I have had to grab the source code from the chainmap pypi package for Python2.7. Notice how I switched the...
Is < faster than
...- B < 0
A = B --> A - B = 0
A > B --> A - B > 0
Now, when A < B the subtraction has to borrow a high-bit for the subtraction to be correct, just like you carry and borrow when adding and subtracting by hand. This "borrowed" bit was usually referred to as the carry bit a...
Determine when a ViewPager changes pages
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ViewPager.setOnPageChangeListener is deprecated now. You now need to use ViewPager.addOnPageChangeListener instead.
for example,
viewPager.addOnPageChangeListener(new ViewPager.OnPageChangeListener() {
@Override
public void onPageScrolled(int position, fl...
What is x after “x = x++”?
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I know this is super old, but I have a question. Is the above order of operation guaranteed by the standard? Is it possible that the assignment is executed before the increment?
– Emerald Weapon
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Write to file, but overwrite it if it exists
...he file if it doesn't exist, but overwrites it if it already exists. Right now this script just appends.
8 Answers
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